APA (7th ed.) Citation

Curtis, H. (1979). Biology (3rd ed.). Worth Publishers.

Chicago Style (17th ed.) Citation

Curtis, Helena. Biology. 3rd ed. New York: Worth Publishers, 1979.

MLA (8th ed.) Citation

Curtis, Helena. Biology. 3rd ed. Worth Publishers, 1979.

Warning: These citations may not always be 100% accurate.